mirror of
https://github.com/Xaymar/obs-StreamFX
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fddf21b8de
While the previous approach of a static thread pool worked, it was sub-optimal in its resource usage. Many of the threads would never see a single task, and simply permanently sleep. This seems like a good idea, except that sleeping threads still end up in the scheduler, and thus waste a tiny amount of resources. It is better to instead dynamically spawn threads when needed and only keeping the bare minimum around all the time. These dynamically spawned threads are also explicitly set to background priority which further reduces scheduling overhead. Finally optimizing the memory layout to prevent unwanted false sharing should also keep sporadic wake ups at a minimum. This new model should be able to handle many more tasks than ever before, but is still not as optimal as it could be.
133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
// Copyright (c) 2020 Michael Fabian Dirks <info@xaymar.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#pragma once
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#include "util/util-curl.hpp"
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#include "util/util-event.hpp"
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#include "util/util-threadpool.hpp"
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#include "warning-disable.hpp"
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#include <atomic>
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#include <chrono>
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#include <map>
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#include <nlohmann/json.hpp>
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#include "warning-enable.hpp"
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namespace streamfx {
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enum class version_stage : uint8_t {
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STABLE, // A.B.C
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CANDIDATE, // A.B.CcD
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BETA, // A.B.CbD
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ALPHA, // A.B.CaD
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};
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version_stage stage_from_string(std::string_view str);
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std::string_view stage_to_string(version_stage t);
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void to_json(nlohmann::json&, const version_stage&);
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void from_json(const nlohmann::json&, version_stage&);
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struct version_info {
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public:
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uint16_t major;
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uint16_t minor;
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uint16_t patch;
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uint16_t tweak;
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version_stage stage;
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std::string url;
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std::string name;
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public:
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version_info();
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version_info(const std::string text);
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bool is_older_than(const version_info other);
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operator std::string();
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};
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void to_json(nlohmann::json&, const version_info&);
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void from_json(const nlohmann::json&, version_info&);
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class updater {
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// Internal
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std::recursive_mutex _lock;
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std::weak_ptr<::streamfx::util::threadpool::task> _task;
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// Options
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std::atomic_bool _data_sharing_allowed;
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std::atomic_bool _automation;
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version_stage _channel;
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std::chrono::seconds _lastcheckedat;
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// Update Information
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version_info _current_info;
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std::map<version_stage, version_info> _updates;
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bool _dirty;
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private:
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void task(streamfx::util::threadpool::task_data_t);
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bool can_check();
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void load();
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void save();
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public:
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updater();
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~updater();
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// GDPR compliance (must require user interaction!)
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bool is_data_sharing_allowed();
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void set_data_sharing_allowed(bool);
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// Automatic Update checks
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bool is_automated();
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void set_automation(bool);
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// Update Channel
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version_stage get_channel();
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void set_channel(version_stage channel);
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// Refresh information.
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void refresh();
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// Check current data.
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version_info get_current_info();
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// Check update data.
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bool is_update_available();
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bool is_update_available(version_stage channel);
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version_info get_update_info();
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version_info get_update_info(version_stage channel);
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public:
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struct _ {
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streamfx::util::event<updater&, bool> gdpr_changed;
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streamfx::util::event<updater&, bool> automation_changed;
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streamfx::util::event<updater&, version_stage> channel_changed;
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streamfx::util::event<updater&, std::string&> error;
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streamfx::util::event<updater&> refreshed;
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} events;
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public:
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static std::shared_ptr<streamfx::updater> instance();
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};
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} // namespace streamfx
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